Substage for microscopes.



H. N. OTT.

SUBSTAGE FOR MICROSCOPES.

APPLICATION FILED JAN. 1, 1917- 1,234,795..

Patented July 31, 1.917.

2 SHEETS-SHEETI H. N. OTT.

SUBSTAGE FOR MICROSCOPES.

APPLICATION FILED JAN. 4, 1917.

Patented July 31,1917.

2 SHEETS-SHEET 2- U 4 1721/07/52." 21 72 97? WW7 w g7 7746,44 M.

lfiarneya UNITED STATES PATENT OFFICE.

HARVEY N. OTT, OF BUFFALO, NEW YORK, ASSIGNOR TO SPENCER LENS CO., 01

BUFFALO, NEW YORK.

SUBSTAGE FOR MICROSCOPES.

Application filed January 4, 1917.

T 0 all whom it may concern:

Be it known that I, HARVEY N. OTT, a citizen of the United States,residing at Buffalo, in the county of Erie and State of New York, haveinvented a new and useful Improvement in Substages for Microscopes, ofwhich the following is a specification.

This invention relates to substages for microscopes.

It is common in microscopes in which the substage is equipped with acondenser to provide two iris diaphragms, a small one above thecondenser and a larger one below the condenser. The lower diaphragm isused in conjunction with the condenser for regulating the light to thesame but the condenser and upper diaphragm are not used together, andwhen it is desired to use the upper diaphragm the condenser and lowerdiaphragm are moved out of the way from beneath the upper diaphragm.

The object of this invention is to provide a substage having a singlediaphragm which is adapted to serve the purposes of the two diaphragmsheretofore employed, said diaphragm being arranged so that by a simpleadjustment it can be located either below the condenser foruse-therewith, or for use at the stage, with the condenser moved out ofthe optical axis beneath the diaphragm. Another object of the inventionis to provide a substage of this sort in which the single diaphragm andthe condenser are mounted to swing laterally beneath the stage to andfrom operative position in the optical axis and to move toward and fromthe stage as usual and, which in addition, are adapted to be invertedfor the purpose of locating the diaphragm beneath the condenser for usetherewith or for locating the diaphragm uppermost in position for usealone at the stage.

In the accompanying drawings:

Figure 1 is a fragmentary side elevation of a microscope stand providedwith a substage embodying the invention.

Fig. 2 is a bottom plan view of the stage and substage.

Fig. 3 is a sectional elevation thereof on line 33, Fig. 2.

Figs. 4 and 5 are sections on line 4-4, Fig. 6, showing differentpositions of the substage ring and the device for holding the ring inits different operative positions.

Fig. 6 is a bottom plan view of the stage Specification of LettersPatent.

Patented July 31, 1917.

Serial No. 140,633.

and substage showing the diaphragm in p0- sitlon for use at the stageand the condenser swung down out of the way, and also indicating bydotted lines the position of the parts when the substage is swung outfrom beneath the stage.

Fig. 7 is a sectional elevation on line 77, Fig. 6, showing the substagewith the diaphragm uppermost and the condenser swung down out of theway.

Fig. 8 is a sectional elevation on line 88, Fig. 6, showing thediaphragm in position for use at the stage.

Fig. 9 is a sectional elevation, enlarged, showing the guide pin andstop for the substage.

A represents the stage, B the tube-sup porting arm and C a portion ofthe stationary stand or supporting base of a microscope. These parts maybe of any usual or suitable construction.

10 represents a frame or ring which is mounted beneath the stage A andsupports the condenser, shown at 11, and an iris diaphragm, shown at 12.The supporting frame 10 is pivotally connected to a substage arm 13which is preferably actuated by the usual quick acting screw by whichthe arm with the parts carried thereby can be swung laterally beneaththe stage and also raised and lowered toward and from the stage. Forthis purpose the arm 13 shown is provided with a bearing sleeve 13mounted in a well known manner to slide and turn on a stationary pivotpost 14 which depends from the stage A. The bearing sleeve 13 has anexternal screw thread which is engaged by the internal thread of ahollow operating screw, sleeve or barrel 16 which is rotatably securedon the lower end of the pivot post 14. When this operating screw isturned in one direction the substage arm and parts carried thereby aremoved downwardly on the pivot post, and when the arm reaches the limitof its downward movement the continued rotation of the screw will swingthe arm and parts carried thereby laterally away from the optical axis.When the screw is turned in the opposite direction it acts first toswing the parts around beneath the stage into the optical axis, and whenthe arm is arrested in this position the continued rotation of the screwwill elevate the parts toward the stage. 17 indicates the usual stop andguide pin which depends from the stage and is adapted to strike a stopnut or projection 18 on the substa'ge arm and to enter a hole 19 in thearm. When the operatln'g screw 16 is turned in the direction lastmentioned,

means described for thus moving the substage to and from aPOSltlOIlCOIlGeIltIlC with the optical axis and raising and lowering itare common in microscopes and are not herein claimed. Any other-suitablemeans for the purpose can be employed. v

The supporting frame or ring 10 can'be pivotally connected to thesubstage arm 13 in 'anysuitable way adapting the supporting ring,whichcarries the condenser 11 and the iris diaphragm 12 on opposite sidesthereof, to be inverted to locate either the condenser or the diaphragmuppermost. As shown, the supporting ring '10 has a hinge lug 20'arrangedto turn on a pivot screw 21 secured to the substage arm. The condenserand diaphragm may both be of the usual or any other suitableconstruction. An iris diaphragm of well known construction is shown,having adjustable pivoted leaves 22 inclosed between one side of thesupporting ring 10 and a casing ring 23 which is secured by screws tothe'supportmg ring. 2 1 indicates the usual pro ecting handle foroperating the leaves of the diaphragm to vary the diaphragm opening.Thecondenser 11 is mounted on the side of the supporting ring 10opposite, to that onwhich the diaphragm is, located 'in' any suitablemanner adapting the condenser 'to be swung or moved to and from aposition in which its axis is coincident with the axis of the supportingring and'diaphragm. As shown, the condenser is hinged to'the supportingring 10 by. a hingejoint 25 affording suflicient friction to prevent thecondenserv from swinging relative to the supporting ring except whenpurposely swung. Since the con denser and diaphragm are mounted onopposite sides of the. supporting ring 10 which is'pivoted to thesubstage arm, either the condensercan be placed uppermost as shown inFigs. 1 to 3, or the diaphragm can .be placed uppermost as shown inFigs. ,6, 7 and 8 by inverting the supporting ring.- Thes'upporting'ringcan be thus turned on the 'substagearm when the arm and ring are swunout to one side of thestage as indicated b the supporting ring has beenturned to place y dotted lines in. Fig. 6.v After permost, dependingupon which is to be used, the substage can be swung around intoposition'concentric with the optical axis and raised by the usualoperation of the screw 16 to place the condenser or diaphragm inoperative position at the stage, as indicated in Fig.1 or Figs. 6 to 8.VVhe'n the condenser has been in position for use and it is desired touse the diaphragm, the substage is lowered and swung out from beneaththe stage by means'of the screw 16, and the supporting ring 10 is turnedto place the diaphragm uppermost. The condenser is then swung down onits hinge 25, as shown in Figs. 6 and 7. The'screwis then operated toswing the diaphragm around beneath the stageand raise it into operativeposition in the recess 26in the bottom of the stage, as indicated inFig. 8

its ends by screws 28 to the pivot lug'20 of-th'e'supporting ring. Thefree ends of this'fspling straddle the pivot lug adjacent to the endface of the substa'ge arm '13 and are adapted to spring into engagementwith.

a stop and *holding pin 29 which projects fromthe end'of the substagearm. VVhen the. supporting ring is in one position, one end of thespring 27 will engage the pin 29, as shown in Fig. 1, the pin being heldbetween the bent end of the spring and a stop shoulder 30 'on the hingelug 20 of the supporting ring. W'Vhenthe supporting ring is invertedthis end of the spring will be disengaged from the stop and holding pin,as shown in Fig. '5, and the ring can be turned until *arrested by theengagement of the pin 29 with another stop face 31'and the opposite endof the spring. Thesu'pporting ring 10 'will then be releasably heldstationary in the inverted position. The spring is adapted to be sprunginto and out of engagement with the stop and holding pin by applying "aslight turning force to the supporting ring. 'Itis not necessarytoindependently actuate the spring to release or secure thering-."l/Vhile a single bent spring 2. In a microscope, the combinationwith the stage, of a condenser and a diaphragm, a support which carriessaid condenser and diaphragm and is rotatably mounted and adapted to beinverted for placing either the condenser or the diaphragm uppermostbeneath the stage.

3. In a microscope, the combination with the stage, of a condenser and adiaphragm rotatably mounted and adapted to be inverted for placingeither the condenser or the diaphragm uppermost beneath the stage,

said condenser being also movable from beneath the diaphragm when thelatter is uppermost.

4. In a microscope, the combination with the stage, of a condenser and adiaphragm rotatably mounted and adapted to be in verted for placingeither the condenser or the diaphragm uppermost beneath the stage, saidcondenser being hinged to swing from beneath the diaphragm when thelatter is uppermost.

5. In a microscope, the combination with the stage, of a condenser and adiaphragm, a support on the opposite sides of which said condenser anddiaphragm are mounted and which is rotatably mounted and adapted to beinverted for placing either the condenser or the diaphragm uppermostbeneath the stage.

6. In a microscope, the combination with the stage, of a condenser and adiaphragm, a support on the opposite sides of which said condenser anddiaphragm are mounted and which is rotatably mounted and adapted to beinverted for placing either the condenser or the diaphragm uppermostbeneath the stage, said condenser being hinged to said support to swingfrom beneath the diaphragm when the latter is uppermost.

7. In a microscope, the combination with the stage, of a condenser and adiaphragm rotatably mounted and adapted to be in verted for placingeither the condenser or the diaphragm uppermost beneath the stage, andmeans for adjusting the invertible condenser and diaphragm relative tothe stage.

8. In a microscope, the combination with the stage, oi a condenser and adiaphragm rotatably mounted and adapted to be inverted for placingeither the condenser or the diaphragm uppermost beneath the stage, saidinvertible condenser and diaphragm being also movable laterally beneathand toward and from the stage, and means for so moving the condenser anddiaphragm.

9. In a microscope, the combination with the stage, of'a condenser and adiaphragm, a support which carries said condenser and diaphragm and isrotatably mounted and adapted to be inverted for placing either thecondensed or the diaphragm uppermost beneath the stage, and means formoving said support laterally beneath the stage and adjusting it towardand from the stage.

10. In a microscope, the combination with the stage, of a condenser anda diaphragm, a support which carries said condenser and diaphragm and isrotatably mounted and adapted to be inverted for placing either thecondenser or the diaphragm uppermost beneath the stage, said condenserbeing hinged to said support to swing from be neath the diaphragm whenthe latter is uppermost, and means for moving said support laterallybeneath the stage and adjusting it toward and from the stage.

11. In a microscope, the combination of a substage arm, means foradjusting said arm relative to the optical axis, a ring having a pivotalconnection with said arm adapting the ring to be inverted, a diaphragmmounted on one side of said ring, and a condenser hinged on the oppositeside of the ring and adapted to swing from beneath the diaphragm whenthe latter is uppermost.

12. In a microscope, the combination with the stage, of a condenser anda diaphragm rotatably mounted and adapted to be in verted for placingeither the condenser or the diaphragm uppermost beneath the stage, and acatch for limiting the rotation of the condenser and diaphragm andreleasably holding either of them uppermost.

13. In a microscope, the combination with the stage, of a condenser anda diaphragm, a support which carries said condenser and diaphragm and isrotatably mounted and adapted to be inverted for placing either thecondenser or the diaphragm uppermost beneath the stage, a stop whichlimits the rotation of said support in opposite directions, and a catchwhich cooperates with said stop for releasably holding said support inits two operative positions.

14. In a microscope, the combination with a stage, of a condenser and adiaphragm, a support which carries said condenser and diaphragm and isrotatably mounted and adapted to be inverted for placing either thecondenser or the diaphragm uppermost beneath the stage, a stop arrangedto engage parts on said support for limiting the rotation of the supportin opposite directions, and a catch which engages said stop forreleasably holding said support in its two operative positions.

IVitness my hand this 30th day of December, 1916.

HARVEY N. OTT. Witnesses:

ROBERT W. WEITH, LOUIS M. POTTER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

